OBD Guide
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B17CF

Emergency Flashing Lamp Request 1 Circuit High

B17CF is an OBD-II diagnostic trouble code meaning: Emergency Flashing Lamp Request 1 Circuit High . Common causes: short circuit in wiring harness, faulty alarm relay. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Alarms don't work
  • Flashing warning lights without driver command
  • The malfunction indicator on the instrument panel is on

Causes

  • Short circuit in wiring harness
  • Faulty alarm relay
  • Problems with the control unit
  • Broken or damaged wiring
  • Contact corrosion

How to Fix

  1. Check the integrity of the hazard warning wiring harness
  2. Check the hazard warning relay for short circuit
  3. Diagnose the control unit for errors
  4. Check connections and contacts for corrosion
  5. Replace damaged components if necessary

Related codes

B17D0B17D1B17D2

FAQ

What does the B17CF code mean?

B17CF is an OBD-II diagnostic trouble code that indicates: Emergency Flashing Lamp Request 1 Circuit High

What causes a B17CF error code?

The most common causes of B17CF include: Short circuit in wiring harness; Faulty alarm relay; Problems with the control unit; Broken or damaged wiring.

How do I fix a B17CF diagnostic trouble code?

To fix B17CF: Check the integrity of the hazard warning wiring harness. Check the hazard warning relay for short circuit. Diagnose the control unit for errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B17CF?

Limited driving only, diagnose soon

How much does it cost to fix B17CF?

The estimated repair cost for B17CF is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat